There were many other groups among the Scotch-Irish:
"The term is somewhat unclear because some of the Scotch-Irish have little or no Scottish ancestry at all, as a large number of dissenter families had also been transplanted to Ulster from northern England. Smaller numbers of migrants also came from Wales and the southeast of England, and others still from Flanders, the German Palatinate, and France (such as the French Huguenot ancestors of Davy Crockett). What united these different national groups was their common Calvinist beliefs, and their separation from the established church (Church of England and Church of Ireland in this case). Nevertheless, a large Scottish element in the Plantation of Ulster gave the settlements a Scottish character."